So-Called Dollars are a category of collectible coins and tokens produced primarily in the United States that serve as commemoratives rather than legal tender. The term originates from a 1937 publication by Hibler and Kappen, which cataloged these pieces, many of which were issued for expositions or significant events. The 1950 editions include a variety of designs and materials, and although they are not widely known outside numismatic circles, they are sought after by collectors for their historical significance and unique artistry. The specific identity of unknown pieces within this category can lead to further intrigue and exploration among collectors.

Item Denomination Series Year Mint
1950 Ca Hk-503 Statehood Centennial Sc$1 Ms Other / Varied So-Called Dollars - Hibler & Kappen 1950 Unknown